mirror of
https://github.com/visgl/react-map-gl.git
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88 lines
2.6 KiB
JavaScript
88 lines
2.6 KiB
JavaScript
// Copyright (c) 2015 Uber Technologies, Inc.
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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import React, {Component} from 'react';
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import PropTypes from 'prop-types';
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import MapGL, {ScatterplotOverlay, autobind} from 'react-map-gl';
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import Immutable from 'immutable';
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import {randomNormal} from 'd3-random';
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import {range} from 'd3-array';
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// San Francisco
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import CITIES from '../data/cities.json';
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const location = CITIES[0];
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const normal = randomNormal();
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function wiggle(scale) {
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return normal() * scale;
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}
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// Example data.
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const locations = Immutable.fromJS(range(4000).map(
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() => [location.longitude + wiggle(0.01), location.latitude + wiggle(0.01)]
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));
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const propTypes = {
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width: PropTypes.number.isRequired,
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height: PropTypes.number.isRequired
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};
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export default class ScatterplotOverlayExample extends Component {
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constructor(props) {
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super(props);
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this.state = {
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viewport: {
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latitude: location.latitude,
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longitude: location.longitude,
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zoom: 11,
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startDragLngLat: null,
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isDragging: false
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}
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};
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autobind(this);
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}
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_onChangeViewport(viewport) {
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this.setState({viewport});
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}
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render() {
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const viewport = {...this.state.viewport, ...this.props};
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return (
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<MapGL
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{ ...viewport }
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onChangeViewport={ this._onChangeViewport }>
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<ScatterplotOverlay
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{ ...viewport }
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locations={ locations }
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dotRadius={ 2 }
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globalOpacity={ 1 }
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compositeOperation="screen"/>
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</MapGL>
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);
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}
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}
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ScatterplotOverlayExample.propTypes = propTypes;
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